Electrical winding mechanism



Jan. 1, 1929.

K. DAVIS ELECTRICAL WINDING MECHANISM Filed Aug. 24. 19 0 5 Shets-Sheet IN5ENTOR,

ATTORNEY Jan. 1, 1929. 1,697,495,

, K. DAVIS 3 ELECTRICAL WINDING MECHANI SM Filed Aug. 24. 1920 3 Sheets-Sheet 2 j AQORNEY Jan. 1, 1929. I 1,697,495

' K. DAVIS ELECTRICAL WINDING MECHANISM Filed Aug 24. 1 20 a Sheets-Sheet 5 Ha I p e I I I l I b r IIII f I I E 5 I 0 5 I &I

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/ NZZ QR ATTORNEY Patented Jan. 1, 1929.

UNITED STATES PATENT OFFICE.

KENNETH DAVIS, OF ST. BENEDICT, DENNSYLVANIA, ASSIGNO R, BY ASSIGN' MENTS, T0 BEMBRANDT PEALE, OF ST. BENEDICT, PENNSYLVANIA, SANDERS DAVIES, OF NEW YORK, N. Y., AND WILLIAM S WALLACE, OF PHILADELPHIA,

PENNSYLVANIA, TRUSTEES.

ELECTRICAL WINDING MECHANISM.

Application filed August 24, 1920. Serial No. 405,696.

The invention relates to a novel electrically driven hoisting or winding mechanism. The objects and advantages of the invention will be set forth in part hereinafter and in part will be obvious herefrom, or may be learned by practice with the invention, said objects and advantages being realized and attained through and by means of the instrumentalities and combinations pointed out in the appended claims. I

The invention consist-s in the novel parts, constructions, arrangements, combinations and improvements herein shown and described.

The accompanying drawings referred to herein and constituting a part hereof, illustrate one embodiment of the invention, and together with the description, serve to 6X- plain the principles of the invention.

Of the drawings Fig. 1 is a central vertical section through a winding or hoisting mechanism constructed in' accordance with the invention, and showing certain of the partsin elevation;

Fig. 2 is an end elevation, looking at Fig. 1 from the left, and showing the driving gearing in transverse section on the line 2-2 of Fig. 1;

Fig. 3 is a. fragmentary elevation of the central part of Fig. 1, looking thereat from the right, and showing certain parts in section on the line 33 of Fig. 1; and

Fig. 4 is a detailed, diagrammatic View of i a form of starting or circuit controlling of very compact structure, which has relatively few parts, and which is provided with simple and efficient controls.

In such exemplified embodiment, the greater part of the mechanism is incased inside of the winding drum, that is, the winding drum has disposed therewithin, and preferably suitable controls.

concentrically therewith the electrical driv nism comprises a shaft concentric with the drum, the drum and shaft both being rotata blein their bearings and being also rotatable relatively to each other; The electrical m0- tor drive is inclosed within the drum as a casing, and is mounted in part upon the casing and in part uponthe inclosed concentric shaft, the motor field being fixed to one and the rotor to the other. As embodied, the field ing mechanism. As embodied, this mecha is mounted on the interior of the winding ferent parts of the gearing to control the drive of the drum by the motor.

Other features of the invent-ion will be primarily set forth in connection with the appended. detailed description, and it will he understood that both the preceding and fol- .lowing descriptions are exemplary and ex planatory of the invention and not restrictive thereof. I

Referring now in detail to the embodiment of the invention illustrated by way off-example in the accompanying drawings, a hollow cylindrical winding drum; 1, having preferably annular flanges 2 andv 3 at either end thereof, is journaled' in bearings 4 and 5, which are mounted on pillars 6 and 7, the pillars projecting upwardly, from the bed 8 of the machine.

Thedrum 1 is provided at each end thereof, as apart of its journal mounting, and to provide bearings for the inclosed, concentric shaft, with concentric cylindrical sleeves 10 and 11, these sleeves being surrounded, respectively, with bushings 12 and'13, which bushings are carried in the bearings Land 5. Within the sleeves 10 and 11 are'bushings =14 and 15, extending into the interior of the drum 1 and provided within the drum with shouldered collars 16 and 17, respectively, which maintain the bushings against longi tudinal displacement in a direction externally of the drum. p

Journal'ed'n the sleeves 14 and 15 of the drum 1 is a shaft 20, which extends outwardly, to the left in Fig. 1 beyond the bearing 4, to constitute a support and connection for the gearing which constitutes the connections between the motor and drum, and which cooperates with the drum controls, as will be later described.

In the present embodied form, the field magnets are fixed to the interior of the drum 1 and the rotating armature is mounted upon theshaft 20. As shown, two or. more field magnets 21 and 22 have their pole pieces fixed to the interior of the drum 1 in suitable manner, as by counter-sunk screw bolts 23 pass drawing. isuitable form and number, likewlse, in acing through the wall of the drum and into the respective pole pieces. Thewinding 24 for the field magnets may be of any suitable form for winding or hoisting work, acc0rding to thebest electrical practice, and they are shown somewhat conventionally in the The pole pieces may be of any screw threaded pin 27 mounted in an insulated bushing 28 in the frame member 7. The pin27 is integral with, or connected to, a

cylindrical socket 29, within which is a pin 30, which pin is impelled by a coiled spring 31 into contact with a ring 32, which ring is fixed upon the detachable head 33 of the drum '1. The head 33 is fastened in position by suitable means, and as shown is provided wit-h an annular flange. fitting within the drum, "and is provlded also with screw bolts 35 pass ing through the head and threading flange 3 of the drum 1. 1

r The ring 32 is mounted on an insulating support-36 upon the head 33, and is fastened by screws 37 passing through the insulation. The armature 25 is provided with a cominto the mutating or distributing ring 40, with which engages a brush41. Brush 41 is mounted on a spring support 42, carried on a shaft 43, which shaft is insulated in the head 33, and is held in 'placeon head 33 by a screw 44. A wire 45 connects the brush 41 with the ring 32.

Cooperating also with the ring 40 is a brush 49, mounted upon a spring 50, which spring is supported from a shaft 51. Shaft 51 is insulated in the head 33 of the drum and held in position on head 33 by a screw 52. A

wire 53 goes from the brush 49 to the windings 24 of the field magnets. As stated, heretofore, the electrical connections may be of 1 such form according to established and known practice as will best adapt them for the work to be done.

In Fig. 4 a form of starting switch is shown, designed to be fool-proof?" and as embodied, comprises a switch lever 59 mounted for unidirectional rotation upon, and suitably insulated from, the machine frame. As embodied, the lever 59 has fixed thereto, to rotate therewith, a spring-pressed pawl 60, which is in engagement with the teeth of a ratchet wheel 61, fixed upon the machine frame. The arm or love 1 59 is adapted to make successive electrical contact with two contact pieces 62 and 63, contacting first with the strip 62 and then with the strip 63, but passing into contact with the latter before passing out of contact with the former.

Switch lever 59 is in circuit with the supply wire 26 for the motor. The contact strip 62 is in circuit with a wire 64, coming from the electrical mains, resistance 65 being interposed in the circuit. connects directly to the supply wire 64 without the intervening resistance.

To start the machine, as the switch lever 59 will move only in the direction of the arrow, it closes the circuit first through the contact strip 62 and the resistance 65 and then through the contact strip 63, then cutting out the resistance 65, and by this means too much and too sudden current inrush, arcing, and other evils are avoided.

Referring now to the gearingconnections and the controls therefor, an eccentric is fixed to the shaft 20 to rotate therewith by a key 71. Mounted on the exterior of the eccentric 70 is a cylindrical bushing 72, and loosely mounted on the bushing 72 are two geared pinions 73 and 74. Pinions 73 and 7 4 have a different number of gear teeth and preferably differ in number by only one or two teeth. The geared pinions: 74 and 73 are connected together in a suitable manner, as by rivets or pins 75 passing therethrough, so that they will rotate together.

Meshing with the geared pinion 73 is an internal gear 77, which is inclosed within a brake drum 79, and is fixed by means of a key 78 to the brake drum. Brake drum 79 is j ournaled loosely on a sleeve 80, which loosely encircles the armature shaft 20. A

nut 81 serves to hold the brake drum in posi- 3 tion upon the shaft. The geared pinion 74is in mesh with an internal gear ring 84, which is inclosed within a brake drum 85 and is fixed to the brake drum by a key 86. Brake drum 85 is fixed to or integral with the sleeve 10 of the winding drum 1. The two brake drums are not connected, except through the gearing, and are capable of relative movement under certain conditions of the connections. Encircling the brake drum 79 is a brake band 87, which is provided with an actuating lever 88, pivoted at 89, and which may be of any suitable and adequate form. Encircling brake drum 85 is a brake band 90, which may be of similar form to, and may The contact strip 63 f be provided with similar actuating means as, brake band 79.

The manner of operation of the gearing is substantially as follows As the armature shaft 20 rotates, due to the eccentric mounting of geared pinion 78, the pinion passes around the internal gear ring 77 sequentially about its circumference, the gear teeth of the pinion likewise meshing sequentially with those of the gear ring. The pinion has backward rotation relatively to the gear ring for each revolution of the shaft 20 equal to the difference in the number of teeth on the pinion 73 and on the gear ring 74. This is usually very small and gives a relatively large reduction between the rotations of shaft 20 and those of the geared pinion 7 3.

' The pinion 74 rotates with the pinion 73, and is adapted to roll along the inner circumference of gear ring 84 in the same manner as pinion 7 3 rolls on gear ring 77 Pinion 74 is adapted to impart to the drum 1 rotation in an opposite direction, and for a distance, during each rotation of pinion 74, equal to the difference in the number of teeth on the geared pinion 74 and on the internal gear ring 84.

When the brake band 87 is tightened, and brake band 90 is loose, gear ring 77 is held against rotation, but gear ring 84 is free to rotate. As armature shaft 20 rotates, pinion 73 rolls on internal gear ring 77 and the pinion has a backward rotation about its own axis for the fraction of a rotation equal to the difference between the number of teeth on gear ring 77 and pinion 7 3, and as gear ring 84 is free to rotate, it will rotate forwardly very slowly, proportionately to the difference in the number of teeth between pinion 74 and gear ring 84. Thus drum 1 rotating with gear ring 84 will make a small fraction of a rotation for each rotation of armature shaft 20. When brake band 87 is loose and brake band 90 is tightened, the drum 1 is held at rest while armature shaft 20 may be permittedjto rotate idly, the differential reverse rotation of the pinions due to pinion 7 4 being in mesh with gear ring 84 (which-is held stationary by brake band 90) causing gear ring 77 and drum 79 to turn idly on sleeve 80. The two'brake levers thus provide a complete control for the drum 1 independently of the running of the motor, theswitch 59 providing the motor control.

In Fig. 5 a double drum construction embodying the invention is shown. The reference numerals used in the preceding figures are applied to the same or corresponding parts as they appear in this figure.

As embodied, the additional drum 95 is integral with or fixed to the housing 79, which in the construction of Figs. 1 and 2 serves also as a brake drum for brake 87 as well as for a housing and support for the fixed internally geared ring 77 In this construction the brake is applied elsewhere as will be later described;

Also, in Fi 5 the otherbrake drum '85, while still used as a brake drum and as a support within which the other internally geared rin 84 is fixed, is also extended in a general cylindrical form so as to constitute a housing 96 about the entire gear mechanism. The end of the housing 96is closed by a flat circular plate 97, fixed to the periphery of the housing by suitable means, such as bolts 98. The interior of the housing may be supplied with lubricant and the entire gear mechanism thus may be run in the lubricant.

The plate 97 is centrally aperturedand provided with a hub 99, within which is a sleeve 100. Journaled in sleeve 100 is a shaft 101, fixed to or integral with the gear housing 79 and with the drum 95. The plate 97 is also preferably provided with a bearing ring 102 running against the fiat face of the housing 79. This will usually provide a suf- Y and 7 4 is of somewhat different form than in I Figs. 1 and 2. In Fig. 5 armature shaft 20 has fixed to the end thereof a double arm 112, the arm being fixed to the shaft intermediately of its ends by a pin 113. On one end of arm 112 is a shaft 114 on which the pinions 73 and 74 are rotatably mounted, while on the other end of arm 112 is a counterweight 115 designed to balance the pinions about the shaft 20. g

The manner of operation of the mechanism shown in 5 is substantially as follows When both brake bands 87 a and are set, both winding drums 1 and are held against motion, and therewith, respectively, the gear rings 84 and 77. i

If brake 90 is released and brake 87 a remains set, drum 95 and therewith gear ring 77 will be held stationary. This will cause pinion 73 to sweep around on gear ring 77, the gear teeth on the two meshing sequentially, but the pinion will have a partial relative rotation with respect to gear ring 77 for each revolution of shaft 20 proportional to the extra member of gear teeth on the ring 77. Pinion 7 4 is fixed to pinion 7 3 to rotate therewith. Pinion 74 sweeps around on gear ring 84 (which is free to rotate by reason of brake I 90 being released), and imparts a backward rotation to gear ring 84 and there-with to drum 1 proportional to the difference in the number of gear teeth on pinion 74: and gear ring 84. This gives a very slow rotation of drum 1 relatively to its driving shaft 20.

If brake 87 is released and brake 90 remains set, the action will be the same except inthis case gear ring 84 is held stationary and gear ring 7 7 and therewith drum 95 is rotated by reason of pinion 73 turning with pinion 74. Thus drum 95 willbe rotated very slowly compared with the rotation of its, driving shaft 20. a i

Theinvention in its broader aspects is not limited to the specific mechanism shown and described but departures may be made therefrom within the scope of the accompanying claims without departing from the principles of the invention and without sacrificing its chief advantages.

What I claim is 1. An electrically propelled winding mechanism comprising a rotatable winding drum, a shaft concentric therewith, an electrical motor for the shaft within the drum including a field and rotor, a second winding drum, and connections whereby the motor may selec tively drive eit-her'drum at a reduced speed with respect to the shaft.

2. An electrically propelled Winding mechanism comprising a rotatable winding drum, a shaft concentric therewith, an electrical motor for the shaft within the drum including a field and rotor, a second winding drum, and a single gear mechanism connected to the shaft and adapted to selectively drive either drum at reduced speed with respect to the shaft.

3. An electrically propelled winding mechanism comprising a rotatable winding drum, a shaft concentric therewith, an electrical motor for the shaft within the drum includ ing a field .and rotor, a second winding drum, connections whereby the motor may selectively drive either drum at a reduced speed with respect to the shaft, and brake control mechanism for'said connections.

4. An electrically propelled winding mechanism comprising a rotatable winding drum, a shaft concentric therewith, an electrical motor for the shaft within the drum including a field and rotor,a second Winding drum, a single gear mechanism connect-ed to I the shaft and adapted to selectively drive either drum at reduced speed with respect to the shaft, and brake control mechanism for said gearing.

5. An electrically propelled winding mechanism comprising a rotatable winding drum, a shaft concentric therewith, an electrical motor for the shaft within the drum including a fluid and rotor, a second winding drum, con nections whereby. the motor may selectively drive either drum at a reduced speed with respect to the shaft, a brake acting on one of said drums and a brake acting on the other drum to control the operation of said connections on the drums.

6. An electrically propelled winding mechanism comprising a rotatable winding drum, a shaft concentric therewith, an electrical m0- tor for the shaft within the drum including a field and rotor, a second winding drum, a single gear mechanism connected to the shaft and adapted to selectively drive either drum at reduced speed with respect to the shaft, a brake acting on one of said drums and a brake acting on the other drum to control the operation of said gearing on the drums.

7 An electrically propelled winding mechanism comprising a winding drum,'a second winding drum, a driving shaft common to both drums, an internally geared ring rotating with one drum, an internally geared ring rotating with the other drum, a pair of pinions geared with the gear rings, respectively, and mounted eccentrically on said driving shaft, and a motor for the shaft mounted within one of the drums.

8. An electrically propelled Winding mechanism comprising a winding drum, a second winding drum, a driving shaft common to both drums, an internally geared ring rotating with one drum, an internally geared ring rotating with the other drum, a pair of pinions geared with the gear rings, respectively, and mounted eccentrically on said driving shaft, and a motor for the shaft mounted within one of the drums, including a rotor on the shaft.

9. An electrically propelled winding mechanism comprising a winding drum, a second winding drum, a driving shaft common to bot-h drums, an internally geared ring rotating with one drum, an internally geared ring rotating with the other drum, a pair of pinions meshing with the gear rings, respectively, and mounted eccentrically on said driving shaft, a brake for each drum, and a motor for the shaft mounted within one of the drums.

10. An electrically propelled winding mechanism comprising a winding drum, a second winding drum, a driving shaft common to both drums, an internally geared ring rotating with one drum, an internally geared ring rotating with the other drum, a pair of pinions meshing withthe gear rings, respectively, and mounted eccentrically on said driving shaft, a brake for each drum, and a motor for the shaft mounted within one of the drums including a rotor'on the shaft.

11. An electrically propelled winding mechanism comprising a rotatable drum, a shaft journaled therethrough and rotatable relatively thereto, an electrical motor on said shaft within said drum, an eccentric fixed on said shaft outside said drum, two pinions loosely mounted on said eccentric and fixedly interconnected, two internal gears, one of which is journaled on said shaft, said gears enclosing said eccentric and pinions, one of said internal gears being rigid with said drum and each of said internal gears meshing with a pinion, and a brake for each internal gear.

12. An electrically propelled Winding mechanism comprising a Winding drum provided with an axial lateral sleeve having an internal gear connected thereto, a motor shaft ournaled in said sleeve and adapted to rotate relatively to said drum, a motor on said shaft enclosed by said drum, a second internal gear disposed beside said first-mentioned gear, concentrically to the axis of said shaft, an eccentric fixed to said shaft Within said gears, a pair of interconnected pinions freely journaled on said eccentric and adapted to be in mesh with said internal gears on rotation of said eccentric, and means to KENNETH DAVIS. 

